Animating 2 Charetors at once (fight sene)
Animation is done with key frames, move both characters a set amount as desired, then apply a new key frame at the desired time line.  It is quite a bit of work so take your time to do it properly, as the timing is what counts a lot.  Use Ctrl+A, in object mode, and make sure you use "location,rotation, scale" every movement and keyframe you change (or appropriate /scale/rotation/location etc). Tutorials someone else might know? Hope this helps.